Line-spacing mechanism for type-writing machines.



J. W. KENNEDY. LINE SPAGING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED MAY 31, 1904. RENEWED OCT. 5, 1908.

929,137. Patnted Ju1y27,1909.

. 17776S'S6S James m Jaenhedg',

. and/ 227701? ratchet Wheel 3, the teeth of which are.

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RATION OF NEW Y GRK...

flriglnal application filed Saris;

To all whom it may. concern: l

Be it known that liar-vans l subject of the King or" at Chicago, Cook county, vented certain new ments in Line-Sp ll iech Writing vo complete specificstio T invention relm 10 ty' etvriting I31"- chines, and L l3? tonne spacing mechanisms This eppli appliwtion heretofore ent Gilles on .Auril 261,284 in i on 2. me spec' for typewriting mach nes is she claimed.

A primary object of inve provide ii Writing machines of sil lc i struction, adapted to he ope ted s pull on a lever applied to the platen c trringe 1n direction to retract said carriage.

In. the accompanying drawings, illustrating my invention, Figure l. pert view of the platen of e typewritii "on spacing mechanism ior equipped with line spacing mechanism of my invention. Mg. 2 is 1569 cool. elc ion of a line spacing inechs .isni cl invention, on the line oi Big. 1. Fig. 3 13 s sec-- tionel elevation tncreo'l on the line 3 3 of Fig. 2. Fig. 4 is :i side view oi the ports shown in Fig, and 6 are enler 'od dots-11 views. And Fig. 7 is a view on. the line 77 of Fig. 1.

Referring now totho drawings, 1

notes the platen ironic and the plate oluhly mounted thormn. both of. wine he oi any usual or approved constr Secured to the shaft ol' the platen;

adapted to be engaged by a, spring pawl 4- pivoted on an arm 5 pivoted to the shaft of the lsten 2 at the side of the ratchet Wheel 3. ivotsl movement is adapted to he imported to the arm 5 to advance and retract the pawl 41, in the Following mnnuer:-

Revol'ul? ly mounted in suitslile hcririi 1 lugs 6 on t platen frame 1 is a rod or lever 7, secured in which is it lateral arm 8, the free end of which is connected. to the arm by means ot' ll] w In the preie )1; shown, see

cificaition of Letters on the rod or Fig. 5, the end JLESNE ASSIGNMENTS, TO THE NEW YORK, N. Y.,'A CORPO it? MA CHINES.

ffe'tented 3111:; 27, 1909.

.i was application filed. m 31, was, No. 456,220.

fitted to it suitable bearing in a lever hiocl' 10 pin tally mounted between lugs 11 1 \l 41 .ie end of the link 9, thus providangular movement of the arm 8. whensrm or lover rotated to operate the line spacing niechan sin. A suitable hole or nine; '22 is lorncl in the platen frame 1 orig which the arm 8 ex tends, saidopening 12 being mode of such length as to provide desi .(l movement of said arm 8.

.ting with the actuating pawl 4, is m pew adopted to engage the teeth of the ratchet Wheel 3 to prevent the platen om being moved re" mrdly when the ocpawl 4; is re noted. As shown, said pro ects leterslly from the platen over said ratchet Wheel, revolubly r l in tie end of which is it Wheel or which engages the teeth of said retcnet wheel. Any other desired or approved form of retaining pearl may, however, he used.

7 s shown, said stopconsists of a plate 15 sec to s stub shalt l6 revoiuhly mounted i late1'iiraine. Formed on said plate 15 are a succession. of steps or notches 1'7, 18 zinc. 19, located at different distances from oi the stub shaft 16 and so disposed at my turning said plate 3.5 into proper poions any one of said surieccs may be it into the path oi travel of the arm 8, lotion being such. that the stop or tch. 1.7 will permit a maximum movement of he :mn 8, say the equivalent of food of ill rec teeth of the ratchet Wheel 3, the stop or notch 19 a minimum movement of said lover arm, say the equivalent of one ratchet tooth,

and the step 18 a movement 01' said lover arm intermediate the steps I? and 19, say two ratchet tooth. The plate 15 is adapted to he turned into diilcrent positions to secure the difi'crent feeds by menus olan arm 20 secured 211d. consists of s spring arm 13,

construction, it is obvious that a pull on the rod 7 below the line of its bearing in a direction to retract said carriage will at the same time operate the line spacing mechanism.

The rod or lover 7 is maintained normally at one limit o'l' its pivotal movement by means of a suitable spring applied thereto. As shown, see Fig. 6, this ezl'ectcd by means of a spring 2b one end 01' which is secured to a collar 24 and the other end to the rear lug (i in which the rod 7 is supported. To provide for adjusting the tension on said spring 23, the collar is loose on said rod or lover and is adapted to be secured thereto in any desired angular adjustment by means oi a set screw 24-. is inclosed in a recess formed in the collar 24. Contact of the arm 8 with the upper end ol' the slot 12 operates to limit the movement of the rod or lever 7 under the inlluence ol' thespring 23,

The platen 2 is adapted to be turned manually to provide for inserting and adjusting the a )01' in the machine b means of knobs 3 or linger grips 25 on the platen shalt, in a familiar manner. In order that the act-nating pawl 4 may not interfere with the rearward movement of the platen by means of the knobs or finger grips 25, means are provided to disengage said pawl from the teeth 01' the ratchet wheel when said pawl is in retracted position. As shown, the means for this purpose consist of a pin 26 secured in the platen frame 1, which projects laterally into the path o'l' travel of a cam surface formed on a rearward extension 3? ol' the actuating pawl el, the relation being such that when said pawl is lu yretractml the cam surface on: aid rearward extension 27 will ei'igage the pin 26 in such manner as to move said pawl -lpiv teary to disengag.,'e the same from the ratchet eel-h in the desired manner.

I claim as my invcntion-- 1. In a line spacing mechanism for a typewriting machine, the combination with'the. platen, a ratchet wheel secured to rotate therewith, a pivoted arm and an actuating pawl pivoted thereon, of means l'or imparting pivotal movement to said pawl carrying arm, comprising a rotatable rod, an arm projccting laterally tlurrelrom, a link which connects said arm with the pivoted pawl-carrying arm, the connection between said. link and said arm on said rotatable rod consisting of a block pivoted to said link and provided As shown, also said spring with a bearing to which the arm on said rotatable rod is slidably titted, substantially as described.

2 in a typewriting machine, the combination with a platen and its carriage, o'l' a line spacingmechanism comprising a rod extending transversely oi the carriage and mounted to rock in bearings thereon, the forward end of this rod being extended forwardly and downwardly below its axis of rotation into accessible proximity to the. keyboard 01' the instrument, means connected to the rod w hereby when it is rocked in its bearings the platen will be rotated, the relation being such that a pull on said rod in a direction to retract the carriage will impart rotation to the rod in a direction to rotate the platen, said means consisting 01" a ratchet wheel on t io platen shalt, a pivoted arm carrying a pawl in engagement with said ratchet wheel, a device for tripping the pawl when said pawl-cariyin arm is raised, a lateral arm carried by too aforesaid rod and extending laterally through a vertical slot in the car- 7 riage l'rame, means for regulating the up and down movement of this arm in said slot, and a depending link pivotally connecting sa1d arm to the pawl-carrying arm.

3. In a typewriting machine, the combina tion with the platen and its carriage, of a line spacing mechanism comprising a transverse rod journaled in hearings on the carriage and having its forward end extending forwardly and downwardly to within proximity to the keyboard, whereby when the carriage is retracted by means of this downwardly turned extremity the rod will at the same timebe rocked in its bearings, means for transmitting this rocking movement to the platen consisting ol' a lateral arm attached to the rod, a link pivotally and slidingly connected to said lateral arm, a pivoted arm below having pivotal connection with the lower end of said link and carryin a pawl, and means l'or tripping said pawl.

4. in a line spacing mechanism for a type writing machine, the combination with the platen and its carriage, of a linc'spacing mechanism comprising a ratchet wheel sccured to rotate with said platen, a pivoted arm and an actuating pawl pivoted thereon, of means for imparting pivotal movement to said pawl carrying arm, comprising a rotatable rod, an arm projecting laterally therefrom, and a link which connects said arm with the pivoted pawl carrying arm, said rotatable rod extending forward from the platen carriage and the end thereof being bent downwardly.- below its axis of rotation into accessible proximity to the keyboard of the instrument, the relation being such that a pull on said rod in a direction to retract the platen carriage will impart rotation thereto in a direction to operate the line spacing mechanism, substantially asdcscribed.

ll-S

came? In combination with a type Writing inachine embodying a sliding carriage carrying a an adjacent part of the carriage frame, a

stepped adjustable plate on the carriage frame for varying the vertical throw of this arm, for the purpose set forth, a link pivot-- ally depending from the end of said arm, an

other arm having one end pivoted coincident with the axis of the platen shaft and carrying a gawl on its free end, and means for tripping said pawl.

- 6.v The combination with a typewriting machine embodying a sliding carriage carrying a rotatable platen and a ratchet Wheel connected to the shaft of the platen, of aline spacin mechanism consisting of a rock shaft journa ed in the carriage and rovided with a forwardly extending operating arm or eX- tension, a lateral arm carried by said rock shaft, .a link depending from said arm, another arm pivoted coincident With the axis of the platen and carrying a pawl on its free end, said pawl having an upward extending cam-aha ed tail piece extending above the pivot o the pawl, and a pin stationarily mounted on the carriage above the pawl and inline with the cam portion thereof, for the purpose herein set forth.

In testimony, that I claim the ioregoingas my invention, I afiix my signature in presence of two subscribing Witnesses, this 23rd day of May, A. D. 1904. 7

JAMES W. KENNEDY.

Witnesses E. M. Kna'rcnnn, CniisvB. GILLSON. 

